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FACTORY SET TUNING PARAMETERS
You should retune your TDC4 with your cell system before you use it to run any real tests. The system
should be retuned whenever you make major changes in the thermal behavior of your system. Typical
changes that would require retuning include:
•
Changing to a different cell,
•
Addition of thermal insulation to the cell,
•
Addition of a cooling coil,
•
Changing the position or wattage of the heater, or
•
Changing from an aqueous electrolyte to an organic electrolyte.
In general you do not have to retune when switching from one aqueous electrolyte to another. Tuning is
therefore only an issue when you first set up your system. Once the controller has been tuned for your
system, you can ignore tuning as long as your experimental setup remains relatively constant.
Restoring Factory Settings
The TDC4 is configured using close to one hundred settings (fully listed in Appendix B) which can be
entered by a complicated user interface using the four buttons on the front of the TDC4. We anticipate
that anyone using this interface is likely to scramble the TDC4 settings at least once. Various
“automatic” TDC4 operations could also result in incorrect settings, especially if they are interrupted in
mid-operation.
Re-entering all the default settings manually would be time consuming and error prone. For this reason,
Gamry has provided an Explain script that resets all TDC4 settings to the factory set defaults. Use this
procedure to reset the TDC4:
1)
Start the Gamry Framework.
2)
The Gamry Framework script that resets the TDC4 is “TDC4 Initialize Settings.exp”. Run it by
selecting
Experiment, Named Script…, TDC4 Initialize Settings.exp
from the Framework
menu.
3)
When this script runs, it displays a dialog similar to that in Figure
3
-1.
Parameter (Symbol)
Setting
Proportional Band 1
9
°
C
Reset 1
685 seconds
Rate 1
109 seconds
Cycle Time 1
1 sec
Dead Band
14 seconds
Summary of Contents for TDC4
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